[GRASSLIST:8103] Re: AVHRR imagery into GRASS?
neteler at itc.it
Sun Aug 28 16:43:41 EDT 2005
On Sat, Aug 27, 2005 at 01:19:13AM -0700, Hamish wrote:
> > Anyone had success with importing this data format?
> [nit pick: AVHRR is an instrument, not a data format; which format is
> your data in?]
> Yes, I've done it. Not for a while so I won't give exact instructions,
> but I don't remember it being a problem.
> Use r.in.gdal:
> or failing that you might try r.in.bin.
> I seem to recall a connection to the new gdalwarp thin-plate-spline
> warping tool for better support for this sort of sequential line
> satellite data. (Markus?)
> If you figure it out, it would be a useful thing to post to the list so
> that others searching the archive can find the instructions.
Here we are (yes, the new gdalwarp thin-plate-spline warping tool is needed):
# warp AVHRR L1B to Erdas/Img - LatLong/WGS84
# <4326> +proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs <>
# apply GCPs with thin plate spline transformer
gdalwarp -tps -of HFA -t_srs "EPSG:4326" -co COMPRESS=YES $FILE $FILE.img
#Then use in a LatLong/WGS84 location:
r.in.gdal $FILE.img $FILE
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